This time, both wearing near matching black bikini tops, with Selena opting for high-waisted white bottoms, they donned life jackets and got stuck in with, well, everything.

In one shot, the pair are joined by friends as they sail over the sea, seemingly having the time of their lives - and yes, Selena is hanging on to her man here too.

The pair seemed comfortable together as they laughed at getting sprayed by the water.

(Image: Vantagenews.co.uk)

Meanwhile Cara took charge of her own ski with another man clinging on behind her, before taking some time out on the boat and enjoying the hot weather, and we don't blame her, if only our friends held birthday parties like this.